Difference between revisions of "SMT-LIB Compliance"

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==SMT-LIBv2 compliance==
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CVC4 is mostly SMT-LIB-conforming with ''--lang smt''.  With the ''--smtlib-strict'' command line option, though, you get additional strictness and standards conformance.
  
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Mostly compliant with --lang smtlib2 (but we get extra strict/conformance things with --smtlib2)
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There are areas where we don't support full functionality, or where we are not compliant:
  
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Commands:
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* We do not yet adequately support nonlinear-arithmetic (the QF_NIA, QF_NRA, QF_UFNRA, UFNRA, and AUFNIRA logics)
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* Bread and butter - supported fully
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* We do not yet support all the features of the recent (September 2014) draft of SMT-LIB 2.5
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** ( set-logic ... )
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** ( set-info ... )
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Also, please note that CVC4 is not intended as a compliance-checker for SMT-LIB input.  That is, it is a bit lenient in accepting non-conforming input.
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** ( declare-sort ... )
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** ( declare-fun ... )
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** ( assert ... )
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** ( check-sat )
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** ( exit )
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* Incrementality - supported fully (with bugs)
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** ( push ... )
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** ( pop ... )
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* Definitions - supported fully
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** ( define-sort ... )
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** ( define-fun ... )
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* Informational output - partial
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** ( get-info ... ) - supported, but quotation marks are not compliant
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*** :error-behavior ("immediate-exit" only)
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*** :name
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*** :authors
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*** :version
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*** :status
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*** :reason-unknown
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*** :all-statistics
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*** ''keyword'' (for solver-specific things, we don't have any yet)
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** ( get-assertions ) - supported
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** ( get-unsat-core ) - nope
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** ( get-proof ) - limited
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* Options
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** ( set-option ... ) - partial support in options branch
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*** :print-success - supported
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*** :expand-definitions - unsupported
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*** :interactive-mode - supported, but doesn't do anything
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*** :produce-proofs - supported
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*** :produce-unsat-cores - unsupported
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*** :produce-models - supported
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*** :produce-assignments - supported
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*** :regular-output-channel - ?
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*** :diagnostic-output-channel - ?
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*** :random-seed - supported
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*** :verbosity - supported, leads to non-conforming output
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*** ''attribute'' (solver-specific, we have several)
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** ( get-option ... )
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*** same support as (set-option ...)
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* Models
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** ( get-value ... ) - working on it
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** ( get-assignment ) - supported fully, assuming get-value is
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Latest revision as of 09:47, 27 September 2014

CVC4 is mostly SMT-LIB-conforming with --lang smt. With the --smtlib-strict command line option, though, you get additional strictness and standards conformance.

There are areas where we don't support full functionality, or where we are not compliant:

  • We do not yet adequately support nonlinear-arithmetic (the QF_NIA, QF_NRA, QF_UFNRA, UFNRA, and AUFNIRA logics)
  • We do not yet support all the features of the recent (September 2014) draft of SMT-LIB 2.5

Also, please note that CVC4 is not intended as a compliance-checker for SMT-LIB input. That is, it is a bit lenient in accepting non-conforming input.

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